From: Yui NARUSE <naruse@...>
Date: 2012-01-15T17:00:29+09:00
Subject: [ruby-core:42135] [ruby-trunk - Bug #5888] JSON unittest fails


Issue #5888 has been updated by Yui NARUSE.


Eric Wong wrote:
> Yui NARUSE <naruse@airemix.jp> wrote:
>  > filed it to GCC's tracker.
>  
>  I don't believe this is a GCC bug: space for buf[4] can be reclaimed
>  as soon as execution finishes in the scope where buf[4] was declared.

GCC answered the same thing.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51862#c2

>  > For JSON, following is simple patch:
>  
>  This was always a bug, we were just lucky because GCC wasn't as
>  aggressive when popping the stack.

I made pull request https://github.com/flori/json/pull/115
----------------------------------------
Bug #5888: JSON unittest fails
https://bugs.ruby-lang.org/issues/5888

Author: Vit Ondruch
Status: Closed
Priority: Normal
Assignee: Yui NARUSE
Category: 
Target version: 
ruby -v: ruby 1.9.3p0 (2011-10-30) [x86_64-linux]


Hello,

When building Ruby 1.9.3 (as well as 2.0.0), the make check spits following errors:

  1) Failure:
test_parse_values(TC_JSON) [/builddir/build/BUILD/ruby-1.9.3-p0/test/json/test_json.rb:174]:
<["\"\b\n\r\t\u0000\u001F"]> expected but was
<["\"\b\n\r\t\xA8\xA8"]>.
  2) Failure:
test_parser_reset(TC_JSON) [/builddir/build/BUILD/ruby-1.9.3-p0/test/json/test_json.rb:291]:
<{"a"=>2,
 "b"=>3.141,
 "c"=>"c",
 "d"=>[1, "b", 3.14],
 "e"=>{"foo"=>"bar"},
 "g"=>"\"\u0000\u001F",
 "h"=>1000.0,
 "i"=>0.001}> expected but was
<{"a"=>2,
 "b"=>3.141,
 "c"=>"c",
 "d"=>[1, "b", 3.14],
 "e"=>{"foo"=>"bar"},
 "g"=>"\"\xA0\xA0",
 "h"=>1000.0,
 "i"=>0.001}>.
  3) Failure:
test_fast_generate(TC_JSONGenerate) [/builddir/build/BUILD/ruby-1.9.3-p0/test/json/test_json_generate.rb:78]:
<{"a"=>2,
 "b"=>3.141,
 "c"=>"c",
 "d"=>[1, "b", 3.14],
 "e"=>{"foo"=>"bar"},
 "g"=>"\"\u0000\u001F",
 "h"=>1000.0,
 "i"=>0.001}> expected but was
<{"a"=>2,
 "b"=>3.141,
 "c"=>"c",
 "d"=>[1, "b", 3.14],
 "e"=>{"foo"=>"bar"},
 "g"=>"\"\xA0\xA0",
 "h"=>1000.0,
 "i"=>0.001}>.
  4) Failure:
test_generate(TC_JSONGenerate) [/builddir/build/BUILD/ruby-1.9.3-p0/test/json/test_json_generate.rb:47]:
<{"a"=>2,
 "b"=>3.141,
 "c"=>"c",
 "d"=>[1, "b", 3.14],
 "e"=>{"foo"=>"bar"},
 "g"=>"\"\u0000\u001F",
 "h"=>1000.0,
 "i"=>0.001}> expected but was
<{"a"=>2,
 "b"=>3.141,
 "c"=>"c",
 "d"=>[1, "b", 3.14],
 "e"=>{"foo"=>"bar"},
 "g"=>"\"\xA0\xA0",
 "h"=>1000.0,
 "i"=>0.001}>.
  5) Failure:
test_generate_pretty(TC_JSONGenerate) [/builddir/build/BUILD/ruby-1.9.3-p0/test/json/test_json_generate.rb:61]:
<{"a"=>2,
 "b"=>3.141,
 "c"=>"c",
 "d"=>[1, "b", 3.14],
 "e"=>{"foo"=>"bar"},
 "g"=>"\"\u0000\u001F",
 "h"=>1000.0,
 "i"=>0.001}> expected but was
<{"a"=>2,
 "b"=>3.141,
 "c"=>"c",
 "d"=>[1, "b", 3.14],
 "e"=>{"foo"=>"bar"},
 "g"=>"\"\xA0\xA0",
 "h"=>1000.0,
 "i"=>0.001}>.
  6) Failure:
test_own_state(TC_JSONGenerate) [/builddir/build/BUILD/ruby-1.9.3-p0/test/json/test_json_generate.rb:92]:
<{"a"=>2,
 "b"=>3.141,
 "c"=>"c",
 "d"=>[1, "b", 3.14],
 "e"=>{"foo"=>"bar"},
 "g"=>"\"\u0000\u001F",
 "h"=>1000.0,
 "i"=>0.001}> expected but was
<{"a"=>2,
 "b"=>3.141,
 "c"=>"c",
 "d"=>[1, "b", 3.14],
 "e"=>{"foo"=>"bar"},
 "g"=>"\"\xA0\xA0",
 "h"=>1000.0,
 "i"=>0.001}>.
  7) Failure:
test_chars(TC_JSONUnicode) [/builddir/build/BUILD/ruby-1.9.3-p0/test/json/test_json_unicode.rb:57]:
<"\x00"> expected but was
<"\xA0">.
  8) Failure:
test_unicode(TC_JSONUnicode) [/builddir/build/BUILD/ruby-1.9.3-p0/test/json/test_json_unicode.rb:20]:
<["\u00A9 \u2260 \u20AC! \u0001"]> expected but was
<["\u00A9 \u2260 \u20AC! \xD8"]>.


Please note that I am building Ruby using GCC 4.7 on Fedora Rawhide. I have not seen this errors before with GCC 4.6


-- 
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